Sensitivity analysis of oxide scale influence on general carbon steels during hot forging

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dc.identifier.uri http://dx.doi.org/10.15488/3381
dc.identifier.uri http://www.repo.uni-hannover.de/handle/123456789/3411
dc.contributor.author Behrens, Bernd-Arno
dc.contributor.author Chugreev, Alexander
dc.contributor.author Awiszus, Birgit
dc.contributor.author Graf, Marcel
dc.contributor.author Kawalla, Rudolf
dc.contributor.author Ullmann, Madlen
dc.contributor.author Korpala, Grzegorz
dc.contributor.author Wester, Hendrik
dc.date.accessioned 2018-05-23T08:43:24Z
dc.date.available 2018-05-23T08:43:24Z
dc.date.issued 2018
dc.identifier.citation Behrens, B.-A.; Chugreev, A.; Awiszus, B.; Graf, M.; Kawalla, R. et al.: Sensitivity analysis of oxide scale influence on general carbon steels during hot forging. In: Metals 8 (2018), Nr. 2, 140. DOI: https://doi.org/10.3390/met8020140
dc.description.abstract Increasing product requirements have made numerical simulation into a vital tool for the time- and cost-efficient process design. In order to accurately model hot forging processes with finite, element-based numerical methods, reliable models are required, which take the material behaviour, surface phenomena of die and workpiece, and machine kinematics into account. In hot forging processes, the surface properties are strongly affected by the growth of oxide scale, which influences the material flow, friction, and product quality of the finished component. The influence of different carbon contents on material behaviour is investigated by considering three different steel grades (C15, C45, and C60). For a general description of the material behaviour, an empirical approach is used to implement mathematical functions for expressing the relationship between flow stress and dominant influence variables like alloying elements, initial microstructure, and reheating mode. The deformation behaviour of oxide scale is separately modelled for each component with parameterized flow curves. The main focus of this work lies in the consideration of different materials as well as the calculation and assignment of their material properties in dependence on current process parameters by application of subroutines. The validated model is used to carry out the influence of various oxide scale parameters, like the scale thickness and the composition, on the hot forging process. Therefore, selected parameters have been varied within a numerical sensitivity analysis. The results show a strong influence of oxide scale on the friction behaviour as well as on the material flow during hot forging. © 2018 by the authors. Licensee MDPI, Basel, Switzerland. eng
dc.language.iso eng
dc.publisher Basel : MDPI AG
dc.relation.ispartofseries Metals 8 (2018), Nr. 2
dc.rights CC BY 4.0
dc.rights.uri https://creativecommons.org/licenses/by/4.0/
dc.subject Finite-element eng
dc.subject Hot forging eng
dc.subject Oxide scale eng
dc.subject.ddc 530 | Physik ger
dc.title Sensitivity analysis of oxide scale influence on general carbon steels during hot forging
dc.type article
dc.type Text
dc.relation.issn 2075-4701
dc.relation.doi https://doi.org/10.3390/met8020140
dc.bibliographicCitation.issue 2
dc.bibliographicCitation.volume 8
dc.bibliographicCitation.firstPage 140
dc.description.version publishedVersion
tib.accessRights frei zug�nglich


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